What does the General prohibition sign symbol look like?

Red ring with a red diagonal bar from upper left to lower right on a white disc, with no picture inside. It is also called “P001”, “forbidden sign”, “prohibition sign” and “red circle with line”.

General prohibition sign symbol: red ring with a red diagonal bar from upper left to lower right on a white disc, with no picture inside — ISO 7010-P001

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Prohibition signs Safety and compliance marks Safety signs (ISO 7010)

General prohibition sign

Red ring with a red diagonal bar from upper left to lower right on a white disc, with no picture inside. · also called “P001”, “forbidden sign”, “prohibition sign”, “red circle with line”

What the General prohibition sign symbol means

Something is forbidden here

This is the plain prohibition sign: a red ring and diagonal bar on white means an action is not allowed. On its own it does not say what is forbidden, so it is used with a text panel that names the prohibited action; read that panel and do not do what it says.

Source · Standard ISO 7010 Graphical symbols — Safety colours and safety signs — Registered safety signs · checked Nov 11, 2026

Where it appears

Prohibition signs

ISO 7010
—This meaning

Questions about the General prohibition sign symbol

What does the General prohibition sign symbol mean?: This is the plain prohibition sign: a red ring and diagonal bar on white means an action is not allowed. On its own it does not say what is forbidden, so it is used with a text panel that names the prohibited action; read that panel and do not do what it says.
What does the General prohibition sign symbol look like?: Red ring with a red diagonal bar from upper left to lower right on a white disc, with no picture inside. It is also called “P001”, “forbidden sign”, “prohibition sign” and “red circle with line”.
Which standard defines the General prohibition sign symbol?: It is listed as ISO 7010-P001.

Checked against the source · Nov 11, 2026 · How we verify

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